Thanks for the debugging help, Daniel. I'll take a look and see if I can spot 
why this function is crashing on my packages.

~Gary

Daniel Littlewood <[email protected]> writes:

> Hi Gary,
>
> At first I was surprised to see gnu-build-system in the traceback, but
> it turns out copy-build-system is implemented in terms of
> gnu-build-system (I did not know this, maybe you did). Looking at the
> procedure install-license-files in gnu-build-system, there are a
> couple of calls to match which could be failing. If I'm reading the
> traceback correctly, it points to line 881, which is the call to match
> in find-source-directory, quoted below.
>
>   (define (find-source-directory package)
>     ;; For an out-of-source build, guess the source directory location
>     ;; relative to the current directory.  Return #f on failure.
>     (match (scandir ".."
>                     (lambda (file)
>                       (and (not (member file '("." ".." "build")))
>                            (file-is-directory?
>                             (string-append "../" file)))))
>       (()                                         ;hmm, no source
>        #f)
>       ((source)                                   ;only one other file
>        (string-append "../" source))
>       ((directories ...)                          ;pick the most likely one
>        ;; This happens for example with libstdc++, which lives within
> the GCC
>        ;; source tree.
>        (any (lambda (directory)
>               (and (string-prefix? package directory)
>                    (string-append "../" directory)))
>             directories))))
>
> This procedure is apparently only called when out-of-source? is true,
> and I am not sure what that means. Regardless, if (match (scandir
> ...)) does not match the given patterns, it must not be returning a
> list (and the traceback confirms this; it is in fact returning #f). I
> suppose this indicates that scandir failed for some reason, for
> instance that .. is not readable. Indeed my copy of the guile manual
> (page 743) confirms this (it cannot be the case that .. is some other
> type of file, so it must be an unreadable directory).
>
>> Return #f when name is unreadable or is not a directory.
>
> This explains the error at least - the match call does not handle #f.
> This does however leave open some questions I do not have an answer
> for. I am not sure what .. is in this context. Perhaps /gnu/store? I
> think that can't be it, because searching the entire store for a
> license file in one package would be terribly wasteful. I guess ..
> must be the checked out source tree. But then how can it not be
> readable?
>
> I hope this debugging is helpful, although I am still confused.
>
> Best wishes,
>
> Dan
>
> On 28/01/2026 14:10, Gary Johnson wrote:
>> Hi Guix,
>>
>> I recently installed Guix onto a new Ubuntu VM using the standard 
>> guix-install.sh script. Now on this VM, I cannot successfully build packages 
>> that do build correctly on my own machine.
>>
>> While one might expect that I am just running different versions of Guix on 
>> each machine, this shouldn't be the case because I am using the same 
>> channels.scm file on both computers via the `guix time-machine` command. 
>> I've never seen different behavior between two machines running the same 
>> Guix version and building the same packages before, so I am utterly 
>> mystified.
>>
>> Here's the error I get on my new VM when building a package:
>>
>> ===========================================================================
>>
>> starting phase `install-license-files'
>> error: in phase 'install-license-files': uncaught exception:
>> match-error "match" "no matching pattern" #f
>> phase `install-license-files' failed after 0.0 seconds
>> Backtrace:
>>             9 (primitive-load "/gnu/store/mbyp0pi1lbcqzw22mv0bjpabqis…")
>> In guix/build/gnu-build-system.scm:
>>      972:2  8 (gnu-build #:source _ #:outputs _ #:inputs _ #:phases . #)
>> In ice-9/boot-9.scm:
>>    1752:10  7 (with-exception-handler _ _ #:unwind? _ # _)
>> In srfi/srfi-1.scm:
>>      634:9  6 (for-each #<procedure 71ac5e089d40 at guix/build/gnu-b…> …)
>> In ice-9/boot-9.scm:
>>    1752:10  5 (with-exception-handler _ _ #:unwind? _ # _)
>> In guix/build/gnu-build-system.scm:
>>     993:23  4 (_)
>>      889:7  3 (install-license-files #:outputs _ #:license-file-regexp …)
>>      881:4  2 (_)
>> In ice-9/boot-9.scm:
>>    1685:16  1 (raise-exception _ #:continuable? _)
>>    1685:16  0 (raise-exception _ #:continuable? _)
>>
>> ice-9/boot-9.scm:1685:16: In procedure raise-exception:
>> Throw to key `match-error' with args `("match" "no matching pattern" #f)'.
>> build process 11 exited with status 256
>>
>> ===========================================================================
>>
>> Here is one of the many offending files that are all failing for me like 
>> this:
>>
>> (define geoserver-css-plugin
>>    (package
>>     (name "geoserver-css-plugin")
>>     (version "2.19.6")
>>     (source (origin
>>              (method url-fetch)
>>              (uri (string-append 
>> "https://sourceforge.net/projects/geoserver/files/GeoServer/"; version
>>                                  "/extensions/geoserver-" version 
>> "-css-plugin.zip"))
>>              (sha256 (base32 
>> "06h2avzqps4dv9lwpck14v4cpk511z1mh13d3w5ii1153rcqdihb"))))
>>     (build-system copy-build-system)
>>     (arguments '(#:install-plan '(("." "./" #:exclude 
>> ("environment-variables")))))
>>     (native-inputs (list unzip))
>>     (home-page 
>> "https://docs.geoserver.org/latest/en/user/styling/css/install.html";)
>>     (synopsis "GeoServer CSS Plugin")
>>     (description "The GeoServer CSS Plugin enables you to write layer styles 
>> using CSS instead of SLD.")
>>     (license gpl2)))
>>
>> In order to get them to build I have to modify their build phases like so:
>>
>> (define geoserver-css-plugin
>>    (package
>>     (name "geoserver-css-plugin")
>>     (version "2.19.6")
>>     (source (origin
>>              (method url-fetch)
>>              (uri (string-append 
>> "https://sourceforge.net/projects/geoserver/files/GeoServer/"; version
>>                                  "/extensions/geoserver-" version 
>> "-css-plugin.zip"))
>>              (sha256 (base32 
>> "06h2avzqps4dv9lwpck14v4cpk511z1mh13d3w5ii1153rcqdihb"))))
>>     (build-system copy-build-system)
>>     (arguments '(#:phases (modify-phases %standard-phases
>>                                          (delete 'install-license-files))
>>                  #:install-plan '(("." "./" #:exclude 
>> ("environment-variables")))))
>>     (native-inputs (list unzip))
>>     (home-page 
>> "https://docs.geoserver.org/latest/en/user/styling/css/install.html";)
>>     (synopsis "GeoServer CSS Plugin")
>>     (description "The GeoServer CSS Plugin enables you to write layer styles 
>> using CSS instead of SLD.")
>>     (license gpl2)))
>>
>> Does anybody have any idea what could be going on here?
>>
>> Thanks,
>>    Gary
>>

-- 
GPG Key ID: C4FBEDBD
Use `gpg --search-keys [email protected]' to find me
Protect yourself from surveillance: https://emailselfdefense.fsf.org
=======================================================================
()  ascii ribbon campaign - against html e-mail
/\  www.asciiribbon.org   - against proprietary attachments

Why is HTML email a security nightmare? See https://useplaintext.email/

Please avoid sending me MS-Office attachments.
See http://www.gnu.org/philosophy/no-word-attachments.html

Reply via email to